E10 displayed, interior light may flicker; control panel may be unresponsive or reset intermittently.

Safety: Disconnect the appliance from mains before inspecting power connections. Only qualified persons should work on live circuits.

Steps:

• Check wall outlet: Test the outlet with another appliance to ensure stable power. Avoid using multi-way adaptors or long extension leads.
• Inspect mains cable: Look for cuts, kinks, or burn marks on the Zanussi wine cooler's power cord. Replace the cord if damaged.
• Verify terminal block: Remove the rear panel and locate the mains terminal block or entry point on the PCB. Ensure screws are tight and there is no discoloration or melting.
• Look at PCB power section: Inspect the low-voltage power supply area on the main board for bulging capacitors or burnt components.
• Replace main PCB if needed: If external power is stable and connections are sound, but E10 persists, the internal power supply on the PCB is likely faulty and the board should be replaced.

Note: If you experience frequent power fluctuations at home, consider using a surge protector rated for refrigeration appliances.